1 /*
2 * Copyright (c) 2004, 2006, 2008 Kungliga Tekniska Högskolan
3 * (Royal Institute of Technology, Stockholm, Sweden).
4 * All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 *
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 *
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 *
17 * 3. Neither the name of the Institute nor the names of its contributors
18 * may be used to endorse or promote products derived from this software
19 * without specific prior written permission.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 * SUCH DAMAGE.
32 */
33
34 #ifdef HAVE_CONFIG_H
35 #include <config.h>
36 #endif
37 #include "windlocl.h"
38 #include <stdlib.h>
39 #include <string.h>
40 #include <errno.h>
41
42 /**
43 * Process a input UCS4 string according a string-prep profile.
44 *
45 * @param in input UCS4 string to process
46 * @param in_len length of the input string
47 * @param out output UCS4 string
48 * @param out_len length of the output string.
49 * @param flags stringprep profile.
50 *
51 * @return returns 0 on success, an wind error code otherwise
52 * @ingroup wind
53 */
54
55 int
wind_stringprep(const uint32_t * in,size_t in_len,uint32_t * out,size_t * out_len,wind_profile_flags flags)56 wind_stringprep(const uint32_t *in, size_t in_len,
57 uint32_t *out, size_t *out_len,
58 wind_profile_flags flags)
59 {
60 size_t tmp_len = in_len * 3;
61 uint32_t *tmp;
62 int ret;
63 size_t olen;
64
65 if (in_len == 0) {
66 *out_len = 0;
67 return 0;
68 }
69
70 tmp = malloc(tmp_len * sizeof(uint32_t));
71 if (tmp == NULL)
72 return ENOMEM;
73
74 ret = _wind_stringprep_map(in, in_len, tmp, &tmp_len, flags);
75 if (ret) {
76 free(tmp);
77 return ret;
78 }
79
80 olen = *out_len;
81 ret = _wind_stringprep_normalize(tmp, tmp_len, tmp, &olen);
82 if (ret) {
83 free(tmp);
84 return ret;
85 }
86 ret = _wind_stringprep_prohibited(tmp, olen, flags);
87 if (ret) {
88 free(tmp);
89 return ret;
90 }
91 ret = _wind_stringprep_testbidi(tmp, olen, flags);
92 if (ret) {
93 free(tmp);
94 return ret;
95 }
96
97 /* Insignificant Character Handling for ldap-prep */
98 if (flags & WIND_PROFILE_LDAP_CASE_EXACT_ATTRIBUTE) {
99 ret = _wind_ldap_case_exact_attribute(tmp, olen, out, out_len);
100 #if 0
101 } else if (flags & WIND_PROFILE_LDAP_CASE_EXACT_ASSERTION) {
102 } else if (flags & WIND_PROFILE_LDAP_NUMERIC) {
103 } else if (flags & WIND_PROFILE_LDAP_TELEPHONE) {
104 #endif
105 } else {
106 memcpy(out, tmp, sizeof(out[0]) * olen);
107 *out_len = olen;
108 }
109 free(tmp);
110
111 return ret;
112 }
113
114 static const struct {
115 const char *name;
116 wind_profile_flags flags;
117 } profiles[] = {
118 { "nameprep", WIND_PROFILE_NAME },
119 { "saslprep", WIND_PROFILE_SASL },
120 { "ldapprep", WIND_PROFILE_LDAP }
121 };
122
123 /**
124 * Try to find the profile given a name.
125 *
126 * @param name name of the profile.
127 * @param flags the resulting profile.
128 *
129 * @return returns 0 on success, an wind error code otherwise
130 * @ingroup wind
131 */
132
133 int
wind_profile(const char * name,wind_profile_flags * flags)134 wind_profile(const char *name, wind_profile_flags *flags)
135 {
136 unsigned int i;
137
138 for (i = 0; i < sizeof(profiles)/sizeof(profiles[0]); i++) {
139 if (strcasecmp(profiles[i].name, name) == 0) {
140 *flags = profiles[i].flags;
141 return 0;
142 }
143 }
144 return WIND_ERR_NO_PROFILE;
145 }
146